Consolidated Balance Sheets (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
MidAmerican Funding, LLC and Subsidiaries [Domain]
Utility plant, net:
Electric	$ 11,671		$ 11,416
Gas	1,341		1,301
Gross utility plant in service	13,012		12,717
Accumulated depreciation and amortization	(4,665)		(4,413)
Utility plant in service, net	8,347		8,304
Construction work in progress	613		318
Total utility plant, net	8,960		8,622
Current assets:
Cash and cash equivalents	1,142		354
Receivables, net	376		418
Inventories	246		240
Other	64		57
Total current assets	1,828		1,069
Other assets:
Goodwill	1,270		1,270
Regulatory assets	841		876
Investments and nonregulated property, net	596		561
Other	123		132
Total other assets	2,830		2,839
Total assets	13,618	[1]	12,530	[1]
Capitalization:
MidAmerican Funding member's equity	4,592		4,324
Noncontrolling interests	0		27
Long-term debt, excluding current portion	3,874		2,915
Total capitalization	8,466		7,266
Current liabilities:
Current portion of long-term debt	669		669
Note payable to affiliate	135		246
Accounts payable	313		386
Taxes accrued	116		227
Interest accrued	32		35
Other	120		120
Total current liabilities	1,385		1,683
Other liabilities:
Deferred income taxes	2,242		2,162
Asset retirement obligations	421		318
Regulatory liabilities	788		750
Other	316		351
Total other liabilities	3,767		3,581
Total capitalization and liabilities	$ 13,618		$ 12,530

[1] (1)Total assets by reportable segment reflect the assignment of goodwill to applicable reporting units.